Ornithology of the "Brategg" Expedition.
Bergen: A. S. John Griegs Boktrykkeri, 1957. Octavo, photographs, maps, tape marks, signed by the author, softcover.
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Bergen: A. S. John Griegs Boktrykkeri, 1957. Octavo, photographs, maps, tape marks, signed by the author, softcover.
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